SteelCarports.com
SteelCarports.com
Design in 3D (833) 647-8335
18x45x15 Garage with Lean-to
Color
Optional — pick one or choose at quote
  • Free delivery & professional installation
  • Anchors for concrete, asphalt, or ground
  • 12- or 14-gauge galvanized steel
  • Certifiable to your county's wind & snow loads
  • 20-year rust warranty on the frame
  • Financing & no-credit-check Rent-to-Own
SKU: SC3

18′x45′x15′ Garage with Lean-to

Starting at
$14,123
Financed
$191/mo

Starting price — final cost varies by state, options, and any wind/snow certification.

Price-beat guarantee. Bring us a written quote for a comparable American-made building from any competitor — same gauge, same engineering, same install — and we'll beat it.

Call for Best Price: (833) 647-8335
Open the 3D Designer
At a glance

The build, by the numbers.

This 18′x45′x15′ Garage with Lean-to is designed with a double-legged A-frame vertical roof for durability. It features (2) 9′x8′ roll-up doors, (1) walk-in door, and a 12′x35′x8′-7′ attached lean-to.

No windows are specified, so daylight is something to raise at quote if you want it. The most common thing we quote an 18′x45′x15′ for is a two-car daily-driver garage with a workbench wall. It also gets ordered for tool and parts storage.

Most popular for two-car daily-driver garage with a workbench wall

Building size

  • 18′Wide
  • 45′Long
  • 15′High
Total coverage810 sq ft

Building details

Frame gauge
14-gauge galvanized steel
Panel gauge
29-gauge steel
Building type
A-Frame Vertical Roof RV Garage double-legged
Roof
A-Frame Vertical Roof
Roll-up doors
(2) 9′x8′ Roll Up Doors
Walk-in doors
(1) Walk-In Door
Workmanship warranty
30 days
Rust-through warranty
20 years
Delivery & installation
Included
What's it for

Same shell, very different jobs.

A 18′x45′ gets specified differently depending on what goes in it — door placement, openings, leg height, whether it closes in. Tell us the job and we'll spec it to that instead of handing you a blank form.

Delivery & installation

What happens after you order.

01
Lock your price

We confirm your exact number for your ZIP and options, in writing — with our price-beat guarantee behind it.

02
Prep your site

Pick a level spot — concrete, asphalt, or ground. Anchors for all three are included.

03
We deliver & install

It arrives and goes up on your site, included in the price across 40 states. Nothing for you to assemble.

04
Backed for decades

Your steel frame carries a 20-year rust warranty from day one.

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Close to this size.

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Questions

Good to know.

A specialist can walk you through this exact build over the phone in a few minutes.

(833) 647-8335

No concrete required. A 18′ x 45′ x 15′ cover anchors to concrete, asphalt or compacted ground, and the right anchors for whichever you have are included. What matters is that the 18′ x 45′ area is level and clear when the crew arrives.

On this 18′ x 45′ x 15′ the 15′ is eave height — base rail up to where the roof meets the sidewall, which is the height of the legs. The peak sits higher because the roof is pitched. Check clearance against the eave and against the door opening, never against the peak.

This one is specified with (2) 9′x8′ roll up doors. That is the opening itself, so measure whatever has to drive through against the door rather than against the 18′ width. Door sizes are not fixed — if what you are parking is tight, say so on the quote, because adding or resizing an opening up front is cheaper and cleaner than cutting one in later.

Delivery and professional installation are both in it — the crew sets the 18′ x 45′ x 15′ on your site. What it does not cover is getting that site ready: leveling, and the concrete if you are pouring a pad. That happens before the crew arrives, by you or a local contractor. Treat $14,123 as the starting figure; options and your county's wind and snow certification move it.

The 20 years figure is rust-through on the frame, which is the structural cover and the one that matters over the life of an 18′ x 45′ building. Separately, the install itself is warranted 30 days, so anything that looks wrong when the crew leaves should be raised inside that window.

This page prices the 18′ x 45′ x 15′ as built, but width moves in 2-foot steps, length in 5-foot steps and leg height in 1-foot steps. Tell us the footprint you actually need and we price that build instead.

Two different parts. The frame is the tubing carrying the load of this 18′ x 45′ x 15′ — 14-gauge galvanized steel. The panels are the skin screwed to it, 29-gauge steel. Lower gauge number means thicker steel, so the frame is always the heavier of the two. Compare frame to frame across quotes; that is the number that decides how a building stands up.
Reviews

Owners say it best.

Real, verified Google reviews from owners who bought their building from us, straight from our business profile.

View all reviews
We are building a barndominium and they delivered the shell on schedule. Our contractor said the framing was straighter than most stick-built shells he sees.
P
Priya & Dave L.
Bend, OR
Loafing shed for the horses showed up exactly when they said it would. The crew leveled and anchored on uneven ground and didn't try to charge extra.
G
Greg H.
Bowling Green, KY
Hurricane-rated anchors and engineer-stamped drawings were ready when our county asked. Permit went through the first time.
T
Tonya W.
Lakeland, FL
Starting at
$14,123
Build your quote

Ready when you are.

Tell us what's going inside and we'll suggest a size to start from, then send back a real, same-day price.

Your building
Carport
Suggested size 18 × 26 × 8 ft — or choose one below
or
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(833) 647-8335